2020 in NASCAR

In 2020, NASCAR sanctioned four national series:

2020 [NASCAR Cup Series] - the top racing series in NASCAR
2020 NASCAR Xfinity Series - the second-highest racing series in NASCAR
2020 NASCAR Gander RV & Outdoors Truck Series - the third-highest racing series in NASCAR
2020 [ARCA Menards Series] - the top racing series in ARCA

Touring series

eNASCAR [iRacing Pro Invitational Series] - The iRacing series that all-stars competed in during the COVID-19 pandemic.
2020 ARCA Menards [Series West] - One of the two regional ARCA Series
2020 ARCA Menards Series East - One of the two regional ARCA Series
2020 NASCAR Whelen Modified Tour - The modified tour of NASCAR
2020 NASCAR Whelen Euro Series - The top NASCAR racing series in Europe